diff --git a/mmcv/ops/fused_bias_leakyrelu.py b/mmcv/ops/fused_bias_leakyrelu.py
index 97baa6655..0f0868488 100644
--- a/mmcv/ops/fused_bias_leakyrelu.py
+++ b/mmcv/ops/fused_bias_leakyrelu.py
@@ -258,7 +258,8 @@ def fused_bias_leakyrelu(input: torch.Tensor,
         torch.Tensor: Feature map after non-linear activation.
     """
 
-    if (not input.is_cuda) and (not input.is_musa) and input.device.type != 'npu':
+    if (not input.is_cuda) and (not input.is_musa) and \
+        input.device.type != 'npu':
         return bias_leakyrelu_ref(input, bias, negative_slope, scale)
 
     return FusedBiasLeakyReLUFunction.apply(input, bias.to(input.dtype),